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Clinical Trial Summary

RATIONALE: Eating a diet rich in isoflavones, compounds found in soy foods, or lycopene, a substance found in tomatoes, may keep prostate cancer from growing. Giving isoflavones or lycopene before surgery may be an effective treatment for prostate cancer.

PURPOSE: Randomized clinical trial to compare the effectiveness of isoflavones with that of lycopene before surgery in treating patients who have stage I or stage II prostate cancer.


Clinical Trial Description

OBJECTIVES:

- Compare the effect of isoflavones vs lycopene prior to radical prostatectomy on intermediate biomarkers (e.g., indices of cell proliferation and apoptosis) in patients with localized prostate cancer.

- Compare the effects of these nutritional supplements on increases in plasma levels and tissue levels of these agents in these patients.

- Compare the effects of these nutritional supplements on changes in surrogate markers of disease progression (e.g., prostate-specific antigen levels) in these patients.

- Compare the effects of these nutritional supplements on changes in serum steroid hormones, estradiol, and free testosterone in these patients.

- Compare the magnitude of these changes in patients treated with these nutritional supplements vs patients in the control group.

OUTLINE: This is a randomized, multicenter study. Patients are stratified according to disease stage (stage I vs stage II) and presence of high-grade prostatic intraepithelial neoplasia. Patients are randomized to 1 of 7 treatment groups.

PROJECTED ACCRUAL: A total of 87 patients will be accrued for this study within 1 year. ;


Study Design

Allocation: Randomized, Endpoint Classification: Efficacy Study, Intervention Model: Parallel Assignment, Masking: Open Label, Primary Purpose: Supportive Care


Related Conditions & MeSH terms


NCT number NCT00042731
Study type Interventional
Source H. Lee Moffitt Cancer Center and Research Institute
Contact
Status Completed
Phase N/A
Start date July 2002
Completion date August 2006

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